Motor protection circuit breaker, 1.6 A, Class 10 — SIRIUS 3RV6011-1AA10
Its thermal overload release (Class 10) and magnetic short-circuit trip cover the two failure modes that kill a motor: sustained overload and a bolted fault. Rated for 690 V with a 6 kV surge voltage resistance, it handles standard 400 V line supplies with headroom for voltage swells.
Depth of 96 mm and height of 97 mm mean it clears most 120 mm deep enclosures. Clearance requirements: 50 mm upwards and downwards, 30 mm at the sides; zero forwards or backwards — the breaker can sit flush against the back panel or door.
Accepts 2x (0.75 to 2.5 mm²) solid or stranded, or 2x 4 mm²; for AWG, 2x (18 to 12) or 2x (20 to 16). Finely stranded with ferrule: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²). Tightening torque: 0.8 to 1.2 N·m. The 6 W total power loss is modest — no forced cooling needed in a standard enclosure, but group several of these in a sealed box and the heat adds up.
